Juniper Networks 5000 SERIES - Manuel (Page 18)

Chapter 1 Overview
10 User’s Guide
Secure Port Modules
Secure Port Modules (SPMs) perform general packet processing and device connection
tasks for devices that communicate with the NetScreen-5000 Series. These modules are
based around the GigaScreen-II ASIC.
SPMs handle packets as they enter and exit the system, providing packet parsing,
classification, and flow-level processing. SPMs also provide encryption, decryption,
Network Address Translation (NAT), and session lookup features. When packets require
processing beyond that provided by an SPM, the NetScreen-5000 Series hands them off to
the management module for further processing.
There are currently two SPM models:
• The 5000-8G SPM, with eight mini-GBIC Gigabit Ethernet ports.
• The 5000-2G24FE SPM, with two mini-GBIC Gigabit Ethernet ports and 24 10/
100 Ethernet ports.
The 5000-8G SPM
The 5000-8G SPM provides eight Gigabit Ethernet mini-Gigabit Interface Converter
(GBIC) ports using hot-swappable transceivers. The 5000-8G delivers up to 4 Gigabits-
per-second (Gbps) of firewall and up to 2 Gbps of Virtual Private Network (VPN) capacity.
This module is also capable of supporting a total of four aggregate interfaces.
(For details on connecting or removing a mini-GBIC transceiver and connecting and
disconnecting a Gigabit Ethernet cable, see Chapter 4,
Servicing the Device .)
The 5000-8G provides port Link and Activity LEDs in addition to Power and Status LEDs.
Power LED
Status LED
Link LED
Transmit/
Receive LED
Eight 1-Gigabit
mini-GBIC Ports